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From the small wooden stool, the Step stool grew to allow grabbing objects from higher places. The need led to the addition of a couple of steps, first of wood and then of light metal. The multi-step ones are also equipped with safety railings for the taller models. They are usually foldable so that they can be easily stored and transported. [3]
The safest angle for a ladder is 75.5°; if it is too shallow, the bottom of the ladder is at risk of sliding, and if it is too steep, the ladder may fall backwards. This angle is achieved by following the 4 to 1 rule for a ladder placed on a vertical wall: for every four feet of vertical height, the ladder foot should move one foot from the wall.
[26] [27] NIOSH developed a Ladder Safety App which was designed to improve extension and step ladder safety — a concern for those working in construction or any other task that requires ladder use. Motor vehicle crashes are another major safety hazard on construction sites.
Not to be confused with Gorilla Glue's O'Keeffe skincare line, O'Keeffe's is a design company specializing in leakproof skylight installations, fire-rated glass, square rung ladders, and other ...
An attic ladder (US) or loft ladder (UK) is a retractable ladder that is installed into an attic door/access panel. They are used as an inexpensive and compact alternative to having a stairway that ascends to the attic of a building. They are useful in areas with space constraints that would hinder the installation of a standard staircase.
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